A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5910-01-391-4528
NSN 5905-00-997-5648
NSN 5855-01-614-5237
NSN 5835-01-606-8768
NSN 5935-00-917-1816
NSN 5990-01-470-2565
NSN 6320-01-203-9864
NSN 6610-00-904-4839
NSN 5945-00-116-2387
NSN 6150-01-062-7095
NSN 5996-01-442-8751
NSN 5985-00-397-7296